Question about Casio PX-830 BK Privia
You should probably check the bender controller and the master volume potentiometer, they might be dirty / oxydized, in such case, you need to either disassemble and clean them or replace them.
Also check for bad solder contacts on wires, connector pins and any of the components (e.g. voltage regulators, capacitors and/or other components).
Check all connectors for any dirt / oxydation on the pins and clean them if necessary.
Also check the main power switch (dirty contacts may result in erratic behaviour of the unit), and, if we're talking onboard speakers, see if the speaker protection mesh is somewhat loose, it may vibrate and cause the speakers to have dirty / distorted sound (you need to fix the mesh firmly in place to stop it from vibrating).
It could alse be a problem elsewhere in the unit (a bad resistor or capacitor, possibly some other component), these are just some of the things that may cause the unit to have dirty sound.
Hope you can make it sound well again.
Posted on Aug 02, 2009
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